午间涨跌停股分析：75只涨停股、8只跌停股，乳业奶粉概念活跃，三元股份、庄园牧场涨停

Group 1 - A-shares experienced significant market activity with 75 stocks hitting the daily limit up and 8 stocks hitting the limit down [1] - The dairy and milk powder sector showed strong performance, with companies like San Yuan and Zhuang Yuan Mu Chang reaching the limit up [1] - Notable continuous limit-up stocks include *ST Dongyi with 20 consecutive limit-ups over 25 days, and ST Zhongdi with 17 consecutive limit-ups [1] Group 2 - Several companies faced continuous limit-downs, including *ST Yuancheng with 21 consecutive limit-downs and *ST Wan Fang with 4 consecutive limit-downs [2] - Other companies such as *ST Changyao and Degute also reached the limit down [2]